Rab W's Mythic Alpine Light Jacket

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Ultralight | Pertex® Quantum Fabric | *Staff Pick
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Delivery time: 5-7 Business Days

"I am pretty stunned at how warm this jacket is for how lightweight it is. It's my new 'must have' when going out for the day, especially on long backcountry tours. As a tall slender gal, I really appreciate the long hem and sleeves and not needing to size up." - Michelle, TBC Employee

- Michelle, is 5'10 / 140lbs and wears a size Medium comfortably.

"As warm as a campfire, and as light as the smoke." - Marty TBC Employee

Marty is 6' / 160lbs and wears a Men's Medium.


The lightest jacket in our Mythic series slashes weight and maximises warmth with body mapped insulation and ultralight construction. Down filled baffles are centred around the core while resilient synthetic insulation on the sides, cuffs, shoulders, and base of the hood breathes and manages moisture efficiently. Using only the best insulation, 900FP down and PrimaLoft® Gold, this jacket is incredibly warm for its weight and bulk.

To keep weight at a minimum we used an ultralight 10D outer which is 100% recycled. This Pertex® Quantum fabric with built-in ripstop is strong, durable, weather protective and feels soft to the touch. Designed with a slim fit and pre curved sleeves for complete freedom to move, it’s easy to layer or stow until needed. The result is a lightweight, robust and packable insulated jacket for all winter mountain adventures, from mixed climbing and alpinism to ski touring and mountaineering.



  • Lightweight stitch-through construction for optimum mobility
  • Zoned down and synthetic-filled hood with part elasticated opening and stiffened peak
  • Lightweight YKK® center front zip with fleece-lined chin guard for comfort
  • Precurved and articulated sleeves for improved fit and movement
  • Lightweight single sided rear hem adjustment with anti-snag tether
  • Supplied with a lightweight stuff sack


  • 2 YKK® concealed zippered hand pockets


  • Insulation Type: 900FP European Goose Down with Nikwax Fluorocarbon-free Hydrophobic Finish (60g/2.1oz, Size 10)
  • Outer: 100% Recycled polyamide
  • Lining: 100% Recycled polyamide
  • 10D Recycled Pertex® Quantum nylon ripstop (28gsm) with fluorocarbon-free DWR
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